Locomotive driving box



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l l l I l l l Il IIIIIIIll l.. 0\ll\\| INVENTOR y w n ATTORNEY Patented 0st. 26, 1926.

tetten Fries.

EDWARD C. NEWMAN, OF PORT JEFFERSON STATION, NEW YORK.

LOCOMOTIVE DRVING BOX.

appneauo'nelea August 5, i924. serial No. 730,263.

This invention relates to locomotive driving boxes and particularly to an adjusting wedge therefor for taking up wear between the driving box and the pedestal of the side frame. 1

The principal objectof the invention is the provision of a wedge which may be accurately adjusted as the drivin@ box becomes expanded and out of line across the top due to the heat created by friction of the driving wheel axle running at a high rate of speed and carrying a tremendous weight.

Another object of the invention is to provide a wedge which will not stick to the driving box should the same become out of horizontal alignment but in the event that the same should accidentally become stuck, there is provided a means disposed below the wedge which will permit a limited amount of movement and said means is also employed for adjusting the position of the wedge.

With these and other objects in view, the invention resides in certain novel construction and combination and arrangement of parts, the essential features of which are hereinafter fully described, are particularly pointed out in the appended claims, and are illustrated in the accompanying drawing, in which Figure 1 is a vertical sectional view of my invention applied to the driving box of a locomotive.

Figure 2 is a horizontal sectional view on the line 2-2 of Figure 1.

Figure 8 is a perspective View of the coactingl parts which constitute the wedge.

Referring more particularly to the draw ing, the reference numeral 10 designates a portion of the side frame of a locomotive, and which is provided with the usual pedestal l1 having jaws 12, and between which jaws the driving` boX 13 is mounted. My improved wedge which is shown in its entirety as at 14 is inserted between one of the jaws 12 which is tapered and the adjacent wall of the driving box 13 as shown in Figure 1 of the drawing.

My improved wedge includes co-acting parts 15 and 16 which are constructed of steel. The part 15 comprises an inclined wall 17 on one face thereof, and a curved or arcuate shaped wall 18 on the opposite face thereof. The inclined wall 17 is adapted to co-act with one of the tapered jaws 12 of the pedestal and is bounded on the vertical sides with flanges 19 which engage the sides of the pedestal to prevent lateral movement of the part. rJhe part 16 is formed with a curved or arcuate shaped wall 20 corresponding` to the curvature of the wall 18 of the part 11 and is adapted to co-act with the wall 18, while the opposite face of the part 16 is flat and receives a wear plate or shoe 21. The plate 21 is made of brass or other relatively soft material and is attached to the flat face of the part 16 by copper rivets 22 which have their heads counter-sunk whereby the rivets will wear simultaneously with the plate 21. The wear plate 21 co-acts with the vertical wall of the driving box when the wedge is in position.

From the foregoing description, it will be seen that the parts 15 and 16 are placed in co-aoting position and inserted in the space between the tapered jaw 12 and the cent wall of the driving box. The wedge is inserted for a distance sufficient to support the driving box in its proper horizontal position, and upon the wear of the plate 21, the same may be driven or moved further toward the top of the pedestal to compensate for the wear usually caused by friction. When the plate 21 has been completely worn, the same may be removed and a new plate substituted therefor.

Disposed below the wedge is an adjusting means 28 for use in adjusting the wedge and uponwhich the wedge rests. The means 23 comprises a bracket 2d which is bolted or otherwise secured as at 25 to the lower edge of the side frame 10. Thread-edly mounted in the bracket is a tensioning spring adjusting nut 26 having a smooth bore therein and through which passes a rod 27. rhe rod 27 is threaded midway between its ends as at 28 for the reception of lock nuts 29 which nuts are. held against rotation by the side walls of the bracket. The lock nuts are normally jammed against the side frame by a spring 30 which places the rod under a slight tension after the same has been adjusted against the part 15 of the wedge by rotating the rod. The free end of the rod is provided with a wrench surface for accommodating an instrument which will permit the easy turning of the rod. It will be seen that one end of the spring abuts the nuts while the other end is seated against the adjusting member and which member may be mov-ed longitudinally to vary the tension of the spring.

The bracket is provided withy stop shoulders- 31 which are arranged in the path. ofimovement of the nuts whereby to limit the downward movement or" the wedge should theV It will thereforebe,v seen that I have pro-V vided an adjusting wedge whichmay be easily applied to the driving box-ot a locomotive and which: will take up, the, wear usually caused bet-Ween frictional Contact of the pedestal ofthel side walls of thev driving box..y

-Vhile I have described what-Ldeem to be fthe most desirable embodiment of ymylin-` venti'on, it is obvious that many .ofthe de.- tailscmaybevamed without 1n any way departing` from, the spirit Aof my inventions and I therefore do. not limit myself to the exactV details ofgconstructionherein set-forth nor to anythingless than-the whole' of myfin-i The spring` 30 will tend tol absorbr vention limited only by the appended :if r

What is claimed las new isz- 1..,Ina device of-the class described,l the combination with the side frame of a locomotive, jaws formed therein, ac driving box between said aws, a wedge including` a pair of co-act-ingi separable parts, one of said parts (3o-acting with one of the jaws and the other of saidparts having a wear plate thereon of relatively soft material for coaction with the-adjacent sidewall of the driving-box for compensating i'or the wear between said :drivinggbcx and said jaws.

2.v A wedge comprising a pair of parts, one

of said parts having a concaved surface on one face and:an;.1nclinedsurface on. the opposite ytac-e, thevoth-er of said: part-shaving ay convexv surface on one face for co-action withzithe concave surface on .the other'part,

si gnature` EDWARD f-C.t NEWMAN, 

